research questions/quiz on the following topic. each topic must at least have 10 examples and i need it urgently. best is within the next 3 hours.
Format should be something similar as the file attached.
Hashtable and hashing
-insert, update and retrieve in a Hashtable
-XML elements as corresponding Tree elements
-User Java API to create XML document as a Tree structure
XPath expression to identify elements and attributes in XML document
use Java API with XPath to extract data from a XML document
represent JSON using Java data structures
convert data structures in Java to JSON